(meteorobs) Draconid radiant position?

[Rainer Arlt]

Is zenith attraction subtracted here? It should be a few degrees.
Probably not enough to account for the full difference, but
needs to be taken into account.

Best wishes,
Rainer

On Tue, Oct 11, 2011 at 07:42:06AM +0200, Bernd Brinkmann wrote:
Content-Description: Mail message body
> Hello Sirko,
> 
> attached the plot of the radiant observed by KLEMOI. It's also a little bit
> shifted. I'll calculate the exact position later.
> 
> Clear skies
> Bernd
> 
> > Hi Sirko,
> >
> > I also observed this. I attached the HULUD1 tracing plot (all meteors).
> >
> > Regards,
> >
> > Erno Berko, Hungary
> >
> > ----- Original Message -----
> > From: <sirko at molau.de>
> > To: "IMO-Network" <imo-network at yahoogroups.com>; "IMO-News Mailing List"
> > <imo-news at yahoogroups.com>
> > Cc: "Meteorobs Mailing List" <meteorobs at meteorobs.org>
> > Sent: Monday, October 10, 2011 10:01 PM
> > Subject: (meteorobs) Draconid radiant position?
> >
> >
> > > Folks,
> > >
> > > upon analysing my Draconid observations I found a significant shift
> > > between the expected and observed radiant position. The expected
> > > position (according to the IMO Meteor Shower Calendar 2011) is
> > >
> > > alpha = 262°, delta = 54°, v_inf = 20km/s
> > >
> > > However, the radiant I get from 200 Draconids, recorded by AVIS2 between
> > > 18:15 and 21:15 UT, is
> > >
> > > alpha = 277°, delta = 54°, v_inf = 20 km/s
> > >
> > > That is, the deviation is exactly one hour in right ascension. Can that
> > > be confirmed by other video observers?
> > >
> > > Best,
> > > Sirko
> >
> 
> Bernd Brinkmann
> 
> Sternwarte Herne, MPC code A18
> Herne, Germany
> 
> e-mail: info at sternwarte-herne.de
> http://www.sternwarte-herne.de
> 


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--
Dr Rainer Arlt - www.rainerarlt.de - +49-331-7499-354  skype: rainerarlt
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